Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended		151 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013
Cash flows from operating activities:
Net loss arising during the development stage	$ (11,186)	$ (7,523)	$ (96,297)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	1,506	511	4,297
Fair value of derivative liabilities in excess of proceeds			508
Gain on adjustment to fair value of derivatives		(1,139)	(1,188)
Financing costs		406	406
Depreciation and amortization	45	13	71
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(310)	126	(456)
Accounts payable	(57)	266	537
Accrued liabilities	(42)	259	1,138
Net cash used in operating activities	(10,044)	(7,081)	(90,984)
Cash flows from investing activities:
Purchases of property and equipment	(38)		(89)
Net cash used in investing activities	(38)		(89)
Cash flows from financing activities:
Net proceeds from issuance of common stock	39,453	9,831	126,387
Net proceeds from issuance of preferred stock			665
Financing costs		(406)	(406)
Net cash provided by financing activities	39,453	9,425	126,646
Net increase in cash and cash equivalents	29,371	2,344	35,573
Cash and cash equivalents at beginning of the period	6,202	3,858
Cash and cash equivalents at end of the period	35,573	6,202	35,573
Supplemental cash flow information:
Income taxes paid	$ (1)	$ (1)	$ (11)
Issuance of common stock for purchase of intangible assets	500		500